My first job was in an injection molding shop- pultrusion is like extrusion
(think of squeezing toothpaste out of a tube) but the force is applied to
the stuff coming out, pulling it through a nozzle, instead of pushing from
the end before the nozzle. HTH-

--
Jim Atkins
Twentynine Palms CA USA

"Outside of a dog, a book is man's best friend.
Inside of a dog, it's too dark to read."
- Groucho Marx